package icu.honeysuccess.goods.service.impl;

import com.alibaba.fastjson.JSON;
import com.github.pagehelper.Page;
import com.github.pagehelper.PageHelper;
import icu.honeysuccess.entity.*;
import icu.honeysuccess.goods.dao.*;
import icu.honeysuccess.goods.service.SpuService;
import icu.honeysuccess.util.IdWorker;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;
import org.springframework.util.StringUtils;
import tk.mybatis.mapper.entity.Example;

import java.util.Date;
import java.util.List;
import java.util.Map;

/**
 * @author 越努力，越幸运。
 */
@Service
public class SpuServiceImpl implements SpuService {

    @Autowired
    private SpuMapper spuMapper;

    @Autowired
    private SkuMapper skuMapper;

    @Autowired
    private IdWorker idWorker;

    @Autowired
    private BrandMapper brandMapper;

    @Autowired
    private CategoryMapper categoryMapper;

    @Autowired
    private CategoryBrandMapper categoryBrandMapper;

    /**
     * 查询全部列表
     * @return
     */
    @Override
    public List<Spu> findAll() {
        return spuMapper.selectAll();
    }

    /**
     * 根据ID查询
     * @param id
     * @return
     */
    @Override
    public Goods findById(String id){
        // 先根据ID查到spu
        Spu spu = spuMapper.selectByPrimaryKey(id);
        // 在根据spuID查到所有的sku
        Example example = new Example(Sku.class);
        Example.Criteria criteria = example.createCriteria();
        criteria.andEqualTo("spuId",id);
        List<Sku> skus = skuMapper.selectByExample(example);
        // 返回goods对象
        Goods goods = new Goods(spu, skus);
        return goods;


    }


    /**
     * 增加
     * @param goods
     */
    @Override
    public void add(Goods goods){

        // 获取spu,并补全spu的数据
        Spu spu = goods.getSpu();
        spu.setId(idWorker.nextId() + "");
        spu.setIsDelete("0");
        spu.setIsMarketable("0");
        spu.setStatus("0");
        // 插入spu到数据库
        spuMapper.insert(spu);
        // 保存sku的信息，抽离出来的方法
        saveSku(goods);
        // 检查该spu的分类ID和品牌ID是否已经存储,如果没有就插入
        CategoryBrand categoryBrand = new CategoryBrand();
        categoryBrand.setBrandId(spu.getBrandId());
        categoryBrand.setCategoryId(spu.getCategory3Id());
        int i = categoryBrandMapper.selectCount(categoryBrand);
        if (i <= 0) {
            categoryBrandMapper.insert(categoryBrand);
        }

    }

    private void saveSku(Goods goods) {
        Spu spu = goods.getSpu();

        // 获取当前日期
        Date date = new Date();
        // 获取品牌对象
        Brand brand = brandMapper.selectByPrimaryKey(spu.getBrandId());
        // 获取分类对象
        Category category = categoryMapper.selectByPrimaryKey(spu.getCategory3Id());

        // 插入sku到数据库
        List<Sku> list = goods.getSkuList();
        for (Sku sku : list) {
            // 设置ID
            sku.setId(idWorker.nextId() + "");
            // 设置规格
            if (sku.getSpec() == null || StringUtils.isEmpty(sku.getSpec())) {
                sku.setSpec("{}");
            }
            // 设置sku名字
            String name = spu.getName();
            Map<String, String> map = JSON.parseObject(sku.getSpec(), Map.class);
            if (map != null && map.size() > 0) {
                for (String value : map.values()) {
                    name += " " + value;
                }
            }
            sku.setName(name);
            // 设置spuID
            sku.setSpuId(spu.getId());
            sku.setCreateTime(date);//创建日期
            sku.setUpdateTime(date);//修改日期
            sku.setCategoryId(category.getId());//商品分类ID
            sku.setCategoryName(category.getName());//商品分类名称
            sku.setBrandName(brand.getName());//品牌名称
            // 插入sku信息
            skuMapper.insertSelective(sku);
        }

    }


    /**
     * 修改
     * @param goods
     */
    @Override
    public void update(Goods goods){
        // 更新spu
        Spu spu = goods.getSpu();
        spuMapper.updateByPrimaryKey(spu);
        // 先删除sku列表
        Example example = new Example(Sku.class);
        Example.Criteria criteria = example.createCriteria();
        criteria.andEqualTo("spuId",spu.getId());
        skuMapper.deleteByExample(example);
        // 保存新的sku列表
        saveSku(goods);

    }

    /**
     * 软删除
     * @param id
     */
    @Override
    public void delete(String id){
        Spu spu = spuMapper.selectByPrimaryKey(id);
        if (!"0".equals(spu.getIsMarketable())) {
            throw new RuntimeException("下架状态才能删除商品！");
        }
        spu.setIsDelete("1");
        spu.setStatus("0");

        spuMapper.updateByPrimaryKeySelective(spu);
    }


    /**
     * 条件查询
     * @param searchMap
     * @return
     */
    @Override
    public List<Spu> findList(Map<String, Object> searchMap){
        Example example = createExample(searchMap);
        return spuMapper.selectByExample(example);
    }

    /**
     * 分页查询
     * @param page
     * @param size
     * @return
     */
    @Override
    public Page<Spu> findPage(int page, int size){
        PageHelper.startPage(page,size);
        return (Page<Spu>)spuMapper.selectAll();
    }

    /**
     * 条件+分页查询
     * @param searchMap 查询条件
     * @param page 页码
     * @param size 页大小
     * @return 分页结果
     */
    @Override
    public Page<Spu> findPage(Map<String,Object> searchMap, int page, int size){
        PageHelper.startPage(page,size);
        Example example = createExample(searchMap);
        return (Page<Spu>)spuMapper.selectByExample(example);
    }

    /**
     * 商品审核
     * @param id
     */
    @Override
    public void audit(String id) {
        Spu spu = spuMapper.selectByPrimaryKey(id);
        if (spu == null) {
            throw new RuntimeException("商品不存在！");
        }
        if ("1".equals(spu.getIsDelete())) {
            throw new RuntimeException("当前商品处于删除状态！");
        }
        // 修改状态并自动上架
        spu.setStatus("1");
        spu.setIsMarketable("1");
        spuMapper.updateByPrimaryKeySelective(spu);
    }

    /**
     * 商品上架
     * @param id
     */
    @Override
    public void put(String id) {
        Spu spu = spuMapper.selectByPrimaryKey(id);
        if (!"1".equals(spu.getStatus())) {
            throw new RuntimeException("未审核通过的商品不能上架！");
        }
        spu.setIsMarketable("1");
        spuMapper.updateByPrimaryKeySelective(spu);
    }

    /**
     * 商品下架
     * @param id
     */
    @Override
    public void pull(String id) {
        Spu spu = spuMapper.selectByPrimaryKey(id);
        if (spu == null) {
            throw new RuntimeException("当前商品不存在！");
        }
        if ("1".equals(spu.getIsDelete())) {
            throw new RuntimeException("当前商品处于删除状态！");
        }
        spu.setIsMarketable("0");
        spuMapper.updateByPrimaryKeySelective(spu);
    }

    /**
     * 还原已删除商品
     * @param id
     */
    @Override
    public void restore(String id) {
        Spu spu = spuMapper.selectByPrimaryKey(id);
        //检查是否删除的商品
        if(!spu.getIsDelete().equals("1")){
            throw new RuntimeException("此商品未删除！");
        }
        spu.setIsDelete("0");//未删除
        spu.setStatus("0");//未审核
        spuMapper.updateByPrimaryKeySelective(spu);
    }

    /**
     * 真实删除
     * @param id
     */
    @Override
    public void realDelete(String id) {
        Spu spu = spuMapper.selectByPrimaryKey(id);
        //检查是否删除的商品
        if(!spu.getIsDelete().equals("1")){
            throw new RuntimeException("此商品未删除！");
        }
        spuMapper.deleteByPrimaryKey(id);
    }

    /**
     * 构建查询对象
     * @param searchMap
     * @return
     */
    private Example createExample(Map<String, Object> searchMap){
        Example example=new Example(Spu.class);
        Example.Criteria criteria = example.createCriteria();
        if(searchMap!=null){
            // 主键
            if(searchMap.get("id")!=null && !"".equals(searchMap.get("id"))){
                criteria.andEqualTo("id",searchMap.get("id"));
           	}
            // 货号
            if(searchMap.get("sn")!=null && !"".equals(searchMap.get("sn"))){
                criteria.andEqualTo("sn",searchMap.get("sn"));
           	}
            // SPU名
            if(searchMap.get("name")!=null && !"".equals(searchMap.get("name"))){
                criteria.andLike("name","%"+searchMap.get("name")+"%");
           	}
            // 副标题
            if(searchMap.get("caption")!=null && !"".equals(searchMap.get("caption"))){
                criteria.andLike("caption","%"+searchMap.get("caption")+"%");
           	}
            // 图片
            if(searchMap.get("image")!=null && !"".equals(searchMap.get("image"))){
                criteria.andLike("image","%"+searchMap.get("image")+"%");
           	}
            // 图片列表
            if(searchMap.get("images")!=null && !"".equals(searchMap.get("images"))){
                criteria.andLike("images","%"+searchMap.get("images")+"%");
           	}
            // 售后服务
            if(searchMap.get("saleService")!=null && !"".equals(searchMap.get("saleService"))){
                criteria.andLike("saleService","%"+searchMap.get("saleService")+"%");
           	}
            // 介绍
            if(searchMap.get("introduction")!=null && !"".equals(searchMap.get("introduction"))){
                criteria.andLike("introduction","%"+searchMap.get("introduction")+"%");
           	}
            // 规格列表
            if(searchMap.get("specItems")!=null && !"".equals(searchMap.get("specItems"))){
                criteria.andLike("specItems","%"+searchMap.get("specItems")+"%");
           	}
            // 参数列表
            if(searchMap.get("paraItems")!=null && !"".equals(searchMap.get("paraItems"))){
                criteria.andLike("paraItems","%"+searchMap.get("paraItems")+"%");
           	}
            // 是否上架
            if(searchMap.get("isMarketable")!=null && !"".equals(searchMap.get("isMarketable"))){
                criteria.andEqualTo("isMarketable",searchMap.get("isMarketable"));
           	}
            // 是否启用规格
            if(searchMap.get("isEnableSpec")!=null && !"".equals(searchMap.get("isEnableSpec"))){
                criteria.andEqualTo("isEnableSpec", searchMap.get("isEnableSpec"));
           	}
            // 是否删除
            if(searchMap.get("isDelete")!=null && !"".equals(searchMap.get("isDelete"))){
                criteria.andEqualTo("isDelete",searchMap.get("isDelete"));
           	}
            // 审核状态
            if(searchMap.get("status")!=null && !"".equals(searchMap.get("status"))){
                criteria.andEqualTo("status",searchMap.get("status"));
           	}

            // 品牌ID
            if(searchMap.get("brandId")!=null ){
                criteria.andEqualTo("brandId",searchMap.get("brandId"));
            }
            // 一级分类
            if(searchMap.get("category1Id")!=null ){
                criteria.andEqualTo("category1Id",searchMap.get("category1Id"));
            }
            // 二级分类
            if(searchMap.get("category2Id")!=null ){
                criteria.andEqualTo("category2Id",searchMap.get("category2Id"));
            }
            // 三级分类
            if(searchMap.get("category3Id")!=null ){
                criteria.andEqualTo("category3Id",searchMap.get("category3Id"));
            }
            // 模板ID
            if(searchMap.get("templateId")!=null ){
                criteria.andEqualTo("templateId",searchMap.get("templateId"));
            }
            // 运费模板id
            if(searchMap.get("freightId")!=null ){
                criteria.andEqualTo("freightId",searchMap.get("freightId"));
            }
            // 销量
            if(searchMap.get("saleNum")!=null ){
                criteria.andEqualTo("saleNum",searchMap.get("saleNum"));
            }
            // 评论数
            if(searchMap.get("commentNum")!=null ){
                criteria.andEqualTo("commentNum",searchMap.get("commentNum"));
            }

        }
        return example;
    }








}
